Tosefta for Menachot 187:6
וסמיכה בשחוטין ליתא והתנן בזמן שכהן גדול רוצה להקטיר היה עולה בכבש והסגן בימינו הגיע למחצית הכבש אחז סגן בימינו והעלהו והושיט לו הראשון הראש והרגל סומך עליהם וזורקן
there would then be an interposition.<span class="x" onmousemove="('comment',' Since none but the hands of the first actually touch the offering.');"><sup>7</sup></span> And if you say, Let one first wave it and then the other, but the Divine Law speaks of one waving and not of many wavings.
Tosefta Demai
One who purchases from a merchant tithes from each and every [bread] mold (see Menachot 94a:11), and if [the merchant] was bringing [vegetables from various farmers] and gathering them before [the purchaser], he takes tithes from each and every cucumber and from each and every bunch [of vegetables], and from each and every date. One who purchases from a shopkeeper, and goes back and takes from him a second time, even though he recognizes the barrel [of wine], he may not tithe from this [purchase] on behalf of that [prior purchase (see Dem. 5:6)].
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